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72 条记录 (耗时 0.021 秒)

    High-refractivity plastic lens resin formed by reacting at least one polyisocyanate with at least one polythiol
    62.
    发明授权
    High-refractivity plastic lens resin formed by reacting at least one polyisocyanate with at least one polythiol 失效
    通过使至少一种多异氰酸酯与至少一种多硫醇反应而形成的高折射率塑料透镜树脂

    公开(公告)号：US4775733A

    公开(公告)日：1988-10-04

    申请号：US19622

    申请日：1987-02-27

    申请人： Yoshinobu Kanemura ,  Masao Imai ,  Katsuyoshi Sasagawa ,  Nobuyuki Kajimoto ,  Teruyuki Nagata

    发明人： Yoshinobu Kanemura ,  Masao Imai ,  Katsuyoshi Sasagawa ,  Nobuyuki Kajimoto ,  Teruyuki Nagata

    IPC分类号： C08G18/72 ,  C08G18/38 ,  C08G18/76 ,  C08G18/77 ,  G02B1/04 ,  C08G18/32 ,  C08G18/34 ,  C08G18/70

    CPC分类号： G02B1/04 ,  C08G18/3876 ,  C08G18/7628 ,  C08G18/773

    摘要： Disclosed herein are a high-refractivity plastic lens resin obtained by polymerizing under heat at least one polyisocyanate (I): ##STR1## wherein X means a hydrogen, chlorine or bromine atom or a methyl or ethyl group, Z is a hydrogen atom or a methyl group, a stands for an integer of 1-4, b is an integer of 2-4, and a+b is not greater than 6 (a+b.ltoreq.6), with at least one polythiol (II): ##STR2## wherein R means a methyl, ethyl, chloromethyl or bromomethyl group, m stands for an integer of 0-2 and n is 4-m and/or at least one polythiol (III): ##STR3## wherein X means a hydrogen, chlorine or bromine atom or a methyl or ethyl group, Y denotes an oxygen or sulfur atom, r stands for 0 or 1, s is an integer of 0-2, p is an integer of 2-4, q is an integer of 1-4 and p+q is not greater than 6 (p+q.ltoreq.6), in such amounts that the --NCO/--SH molar ratio falls within 0.5-3.0, as well as a lens made of the above resin.

    摘要翻译： 本文公开了通过在加热下聚合至少一种多异氰酸酯（I）获得的高折射率塑料透镜树脂：其中X表示氢，氯或溴原子或甲基或乙基，Z是氢 原子或甲基，a表示1-4的整数，b表示2-4的整数，a + b不大于6（a + b <6），至少有一个多硫醇（ II）：其中R表示甲基，乙基，氯甲基或溴甲基，m表示0-2的整数，n表示4-m和/或至少一个多硫醇（III）：（III）其中X表示氢，氯或溴原子或甲基或乙基，Y表示氧或硫原子，r表示0或1，s表示0-2的整数，p表示 2-4，q是1-4的整数，p + q不大于6（p + q

    Process for the preparation of 4'-hydroxybiphenyl-4-carboxyl acid
    63.
    发明授权
    Process for the preparation of 4'-hydroxybiphenyl-4-carboxyl acid 失效
    制备4'-羟基联苯-4-羧酸的方法

    公开(公告)号：US4755617A

    公开(公告)日：1988-07-05

    申请号：US31709

    申请日：1987-03-30

    申请人： Tohru Miura ,  Teruyuki Nagata ,  Hideki Mizuta

    发明人： Tohru Miura ,  Teruyuki Nagata ,  Hideki Mizuta

    IPC分类号： C07C65/105 ,  C07C51/347 ,  C07C51/377 ,  C07C65/15

    CPC分类号： C07C51/347 ,  C07C51/377

    摘要： A process for the preparation of 4'-hydroxybiphenyl-4-carboxylic acid by reacting a cyclohexanone-4-carboxylic acid compound with phenol in the presence of an acid catalyst, and then subjecting the resulting 4,4-bis(4-hydroxyphenyl)cyclohexanecarboxylic acid compound to decomposition and dehydrogenation reactions in the presence of a base and a dehydrogenation catalyst. The aforesaid cyclohexanone-4-carboxylic acid compound is obtained by catalytically hydrogenating a 4-hydroxybenzoic acid compound in a secondary alcohol or tertiary alcohol solvent, and the reaction mixture thus obtained is directly used for the reaction with phenol.

    摘要翻译： 通过环己酮-4-羧酸化合物与苯酚在酸催化剂存在下反应制备4'-羟基联苯-4-羧酸的方法，然后将所得的4,4'-双（4-羟基苯基） 环己烷羧酸化合物在碱和脱氢催化剂存在下进行分解和脱氢反应。 上述环己酮-4-羧酸化合物是通过在仲醇或叔醇溶剂中催化氢化4-羟基苯甲酸化合物而获得的，所得反应混合物直接用于与苯酚反应。

    Process for producing 1,3-dialkyl-2-imidazolidinone
    67.
    发明授权
    Process for producing 1,3-dialkyl-2-imidazolidinone 失效
    1,3-二烷基-2-咪唑啉酮的制备方法

    公开(公告)号：US5583256A

    公开(公告)日：1996-12-10

    申请号：US494735

    申请日：1995-06-26

    申请人： Hiroshi Naruse ,  Hideki Mizuta ,  Shinichi Umeda ,  Teruyuki Nagata

    发明人： Hiroshi Naruse ,  Hideki Mizuta ,  Shinichi Umeda ,  Teruyuki Nagata

    IPC分类号： C07C275/14 ,  C07D233/34

    CPC分类号： C07D233/34 ,  C07C275/14

    摘要： A novel bis-urea compound, preparation process of the compound, and preparation process of 1,3-dialkyl-2-imidazolidinone are disclosed and the disclosure provides a novel preparation process of 1,3-dialkyl-2-imidazolidinone and simultaneously enables effective utilization of N,N',N"-trialkyldiethylentriamine which lacks a large amount use and is desired to develop new application.

    摘要翻译： 公开了一种新的双脲化合物，该化合物的制备方法和1,3-二烷基-2-咪唑烷酮的制备方法，本公开提供了1,3-二烷基-2-咪唑烷酮的新型制备方法，同时使得有效 利用缺乏大量使用的N，N'，N“ - 三烷基二乙基三胺，需要开发新的应用。

    Process for preparing high-purity aniline
    68.
    发明授权
    Process for preparing high-purity aniline 失效
    制备高纯度苯胺的方法

    公开(公告)号：US5283365A

    公开(公告)日：1994-02-01

    申请号：US896696

    申请日：1992-06-10

    申请人： Teruyuki Nagata ,  Katsuji Watanabe ,  Yoshitsugu Kono ,  Akihiro Tamaki ,  Takashi Kobayashi

    发明人： Teruyuki Nagata ,  Katsuji Watanabe ,  Yoshitsugu Kono ,  Akihiro Tamaki ,  Takashi Kobayashi

    IPC分类号： C07C209/36

    CPC分类号： C07C209/36

    摘要： A process for the continuous preparation of aniline by hydrogenating nitrobenzene is disclosed which comprises the steps of suspending, in an aniline solvent, a catalyst of palladium or palladium-platinum which is deposited on a lipophilic carbon having an oil absorbency of at least 100, adding a zinc compound and an alkali metal carbonate or a zinc compound and an alkali metal bicarbonate as promotors to the reaction system, and carrying out reaction at a temperature of from 150 to 250.degree. C. substantially in the absence of water while aniline and water formed in said reaction are continuously distilled off as vapor from the reaction product, and the concentration of nitrobenzene in the reaction solution is maintained at 0.01% by weight or less.

    摘要翻译： 公开了通过氢化硝基苯连续制备苯胺的方法，其包括以下步骤：在苯胺溶剂中悬浮沉积在吸油性至少为100的亲脂性碳上的钯或钯 - 铂催化剂，加入 锌化合物和碱金属碳酸盐或锌化合物和碱金属碳酸氢盐作为反应体系的促进剂，并且在150-250℃的温度下进行反应，基本上在不存在水的同时形成苯胺和水 在所述反应中作为蒸气从反应产物中连续蒸馏出来，反应溶液中硝基苯的浓度保持在0.01重量％以下。

    Process for producing aminobenzylamine
    70.
    发明授权
    Process for producing aminobenzylamine 失效
    生产氨基苄胺的方法

    公开(公告)号：US4978792A

    公开(公告)日：1990-12-18

    申请号：US323087

    申请日：1989-03-14

    申请人： Teruyuki Nagata ,  Akihiro Tamaki ,  Katsuzi Watanabe ,  Akihiro Yamaguchi

    发明人： Teruyuki Nagata ,  Akihiro Tamaki ,  Katsuzi Watanabe ,  Akihiro Yamaguchi

    IPC分类号： C07C209/36

    CPC分类号： C08G59/504 ,  C07C209/36

    摘要： A commercially advantageous process for producing m- or p-aminobenzylamine is provided, which is characterized by subjecting m- or p-nitrobenzaldehyde and ammonia to catalytic reduction in the presence of a reducing catalyst in an organic solvent; in the reduction, when nitrobenzaldehyde and ammonia are in advance made a mixed solution in an organic solvent, and this solution is added in divided manner, the yield being further improved.

    摘要翻译： 提供了一种商业上有利的生产对 - 或对氨基苄胺的方法，其特征在于在还原催化剂存在下在有机溶剂中使对 - 硝基苯甲醛和氨进行催化还原; 在还原时，预先将硝基苯甲醛和氨在有机溶剂中制成混合溶液，分开加入该溶液，进一步提高收率。